JEE Main 2026 Chemistry question
The reaction A(g)⇌B(g)+C(g) was initiated with the amount 'a' of A(g). At equilibrium it is found that the amount of A(g) remaining is (a−x) at a total pressure of p. The equilibrium constant Kp of the reaction can be calculated from the expression:
Answer: (B)
Solution
Total moles=a+x. Kp=/ = [x/(a+x)]²p² / [(a−x)/(a+x)]p = x²p/[(a+x)(a−x)] = x²p/(a²−x²).